Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Ion-pair Formation"”.
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Ion-molecule reaction mass spectrometry and vacuum-ultraviolet negative photoion spectroscopy
… polyatomic molecules in the gas phase. Selected ion flow tube mass spectrometry has been used to study the reactions of cations and anions with ethene, monofluoroethene, 1,1-difluoroethene, trifluoroethene and tetrafluoroethene. Calculated collisional reaction rate coefficients are compared to …
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The ion exchange behaviour of some trivalent cations in aqueous monoethanolamine
This investigation of the behaviour of cation exchange resins in aqueous monoethanolamine has led to some interesting conclusions regarding the influence of the solvent onion exchange resins. The main results and conclusions, which have been discussed in detail in the preceding chapters, will now …
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Studies of Highly Polar Atomic and Molecular Systems: Quantum Dynamics and the Route to Experimental Investigations
Theoretical investigation of the dynamics of adiabatic quantum mechanics in two different, highly polar systems has been made. The systems were chosen for their fundamental scientific interest, as they represent atoms and molecules with exaggerated properties, as well as ease of experimental study …
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Heats of Dissolution of Several Imidazolium-Based Ionic Liquids into Low Dielectric Media
Ionic liquids (ILs) are salts that are liquid at or near room temperature. They have unique properties since they are completely composed of ions and therefore have many potential applications. This thesis research focuses on the properties of ILs in low polarity solvent, chloroform (CHCl3). The …
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Supercritical Fluid Chromatography of Ionic Compounds
Addition of a small amount of polar solvent (i.e. modifier) which contains an ionic component (i.e. additive) to a CO2 mobile phase has shown major improvement in the elution of ionic analytes via packed column supercritical fluid chromatography (SFC). Firstly, we focused on the elution of sodium …
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Physicochemical Study of Nano-structuring Within Ionic Liquids Using Photoswitchable Spirocyclic Compounds
Ionic liquids (ILs) are presented as novel solvents for the replacement of organic solvents and the formation of smart liquids. The following thesis investigates the proposed nano- and atom-scale structuring of ionic liquids, a feature that appears to totally underpin their unique behavioural …
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Studies of the dissociation and energetics of gaseous ions
In this thesis the electron ionization of a number of small gas phase molecules is investigated using pulsed time-of-flight mass spectrometry coupled with a 2-D ion coincidence technique. The simultaneous acquisition of conventional TOF mass spectra and ion coincidence mass spectra, enables …
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Ion Pairing in Aqueous Metal Sulfates and Platinum Group Metal Ammonium Solutions
The structure and dynamics of ions and ion pairs in solution play an integral part in several biological and chemical processes. Historically the calculation of ion pair association constants from computer simulations has been complicated due to the difficulty in validating metal ion force fields …